摘要
非饱和土力学是目前岩土力学研究的热点和难点,土水特征曲线体现了非饱和土体的持水能力,它是非饱和土力学研究的核心问题之一。现场试验和室内试验通常针对非饱和土的基质吸力进行测试,从而获得有效的土水特征曲线。基质吸力的测试方法很多,主要包括张力计法、滤纸法、热传导探头法、渗析法、时域反射计法、压力板仪法等。着重对使用较为广泛的张力计法、滤纸法、时域反射计法、压力板仪法、热传导探头法进行归纳介绍及实践应用分析。
Unsaturated soil mechanics is a hot and difficult spot in rock and soil mechanics. Soil-water characteristic curve embodies the water holding capacity of the unsaturated soil,which is one of the core issues in unsaturated soil mechanics. Field and lab experiments are usually conducted on unsaturated soil matrix suction to obtain effective soil-water characteristic curve. There are many testing methods by using tensiometer,filter paper,thermal conductive sensor,dialysis,TDR and pressure plate apparatus,among which the widely used tensiometer,filter paper TDR pressure plate apparatus and thermal conductive sensor are summarized and analyzed after application.
出处
《常州工学院学报》
2016年第4期1-6,共6页
Journal of Changzhou Institute of Technology
基金
江苏省科学技术厅基础研究计划(自然科学基金)面上研究项目(BK20131141)
关键词
非饱和土
基质吸力
土水特征曲线
测试方法
unsaturated soil
matrix suction
soil-water characteristic curve
testing method
